package com.itheima.mapper;

import com.itheima.pojo.Emp;
import org.apache.ibatis.annotations.*;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;

@Mapper
public interface EmpMapper {
    //根据ID删除数据
    @Delete("delete from emp where id = #{id}")
    public void delete(Integer id);
//    public int delete(Integer id);

    //新增员工
    @Options(useGeneratedKeys = true, keyProperty = "id")
    @Insert("insert into emp(username, name, gender, image, job, entrydate, dept_id, create_time, update_time) values (#{username},#{name},#{gender},#{image},#{job},#{entrydate},#{deptId},#{createTime},#{updateTime})")
    public void insert(Emp emp);

    //更新员工
    @Update("update emp set username=#{username},name=#{name},gender=#{gender},image=#{image},job=#{job},entrydate=#{entrydate},dept_id=#{deptId},update_time=#{updateTime} where id=#{id}")
    public void update(Emp emp);

    //方案三：开启mybatis的驼峰命名自动映射开关 --- a_column---> aColumn
    //根据ID查询员工
    @Select("select * from emp where id = #{id}")
    public Emp getById(Integer id);

    //方案一：给字段起别名，让别名与实体类属性一致
//    @Select("select id, username, password, name, gender, image, job, entrydate, dept_id deptId, create_time createTime, update_time updateTime from emp where id = #{id}")
//    public Emp getById(Integer id);

    //方案二：通过@Results，@Result注解手动映射封装
//    @Results({
//            @Result(column = "dept_id", property = "deptId"),
//            @Result(column = "create_time", property = "createTime"),
//            @Result(column = "update_time", property = "updateTime")
//    })
//    @Select("select * from emp where id = #{id}")
//    public Emp getById(Integer id);

    //条件查询员工
    //方式一
//    @Select("select * from emp where name like concat('%${name}%') and gender = #{gender} and entrydate between #{begin} and #{end} order by  update_time desc")
//    public List<Emp> list(String name,Short gender,LocalDate begin,LocalDate end);

    //方式二
//    @Select("select * from emp where name like concat('%',#{name},'%') and gender = #{gender} and entrydate between #{begin} and #{end} order by  update_time desc")
//    public List<Emp> list(String name,Short gender,LocalDate begin,LocalDate end);

    //动态条件查询
    public List<Emp> list(String name,Short gender,LocalDate begin,LocalDate end);

    //动态更新员工
    public void update2(Emp emp);

    //批量删除员工
    public void deleteByIds(List<Integer> ids);
}
